Shuttle-driver f



` (No Model.)

1 G. W. LORD.

SHUTTLBDRIVER POB. SEWING MACHINES.

N. PETERS. Pnam-Limogmpher, wnmngmn. D. c,

UNITED STATES PATENT- GFFICE..

GEORGE W. LORD, OF BOSTON, MASSACHUSETTS.

i SHUTTLE-DRIVER FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 252,045, dated January IO, 18,82;y

Application filed October 21, 1881.

To all whom it may concern Be it known that I, GEORGE W. LORD, of Boston, of the county of Suolk and State of Massachusetts, have invented a new and useful Improvementin Mechanism for Operating the Shuttle-Driver of a Sewing-Machine; and I do hereby declare the same to be described in the following specication and represented in the accompanying drawings, of which- Figure lis an under side view, and Fig. 2 a longitudinal section, of my improved mechanism as applied to the base-plate and an upright shat of a sewing-machine. Fig. 3 is a view of the curve slotted slide constituting part of my invention.

The nature of my improvement is duly set.

` free to turn around on the Shaft,When the screw may not bear against the shaft. From this disk a Stud, a, carrying a friction-roller, b, projects into a curved slot, c, made, as represented, in a plate, F, supported byand adapted to slide longitudinally and rectlinearly between gnides d d d cl', arranged as shown. Near the curved center of the curved slot o a screw, e, is screwed into the slide-plate F, such screw going through and constituting a pivot for another and rectilinear slide-plate, G, arranged between andI against the two parallel prongs ff of a forked lever, H. In said lever, and extending back from the space between its prongs, is a slot, g, as shown in Fig. 1. A screw, h, arranged as represented, and going laterally into one of the parts i i on op- (No model.)

posite sides of the slot andV screwed into the other, serves to 'compress the prongs upon the slide G as it or they may become worn.

The lever H is composed of a short pivotal cylinder or hub,.l, and two arms, m a, projecting from it in manner as represented. At its opposite ends the hub or cylinder l is countersunk to receive two pivots, o p, extending from and arranged in a carrier, I, in manner as shown in Fig. 2. The carrier has at its upper end a tenon, q, which enters the base-plate, and a projection, r, extending*therefrom, and

is held in place by set-sorews s s, screwed into such projection and against the tenon. The

lower pivot is screwed into the carrier and provided with a clamp-nut, t. The longer arm of the lever H is to be xcdto the shuttle-driver to be moved by it.

While the shaft C may be in revolution an intermittent vibratory'motion will be imparted to the lever H, whereby the shuttle-driver at one extremity of its path of motion will be at rest awhile-that is, after the shuttle may have plied to the shaft C, as described, with the siide-plate F, having the curved slot o, and with the slide G and the forked lever H, all being arranged and to operate substantially as and for the purpose set forth.

e GEORGE w. LORD.

Witnesses:

R. H. EDDY, E. B. PRATT.

The combination ofthe cranked disk D, ap- 

